Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc13f857b4467483…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 07:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c77000359a55d597989e72239d3a7b4 SHA-1: 8a578329fd14a5340c3de7cb915426e0c861850b SHA-256: cc13f857b44674836ad1e318ba367a2042b97b6dfb86ba79e56a03b9640ad1d6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=inductive+and+deductive+reasoning+examples+in+everyday+life+pdf'. This indicates the document is designed to lure users to malicious infrastructure. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=inductive+and+deductive+reasoning+examples+in+everyday+life+pdf
    • http://files.natalieasport.com/uploads/1/3/2/6/132695575/podukurupo.pdf
    • http://files.southwestpassages.org/uploads/1/3/1/0/131070918/dd05df1a47fd.pdf
    • http://files.vapeboss.shop/uploads/1/3/0/8/130814078/559e8ddf5.pdf
    • http://files.amandaleightonphoto.com/uploads/1/3/2/6/132681617/vavupodut.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/mathematical_analysis_business_and_economic_applications.pdf
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/56547350479.pdf
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/pizenugabeta.pdf
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/34458040787.pdf
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/transition_to_advanced_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/formasi_cpns_belitung_timur.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/77594701499.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/bolamuru.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/74463642220.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/laduvigajilamemesuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/piruzexewofajidu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/ralaguwijefowofugavutu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000690b.bin
ad4b97fdf429abbbf03bfc1b65fce3f6841431d1c89905eb4ff91f1889126e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690B 5640 bytes
font_01_sfnt_off00007c40.bin
0ef3a315a44c1a2e3d513b15a155ec0205f48754ed452cfd9a81a36f8a0e0093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 10160 bytes

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